# US 2014/0189938 A1 · Battery pack and helmet mounting arrangement > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0189938 A1 - Document ID: US20140189938A1 - Status: Published application - Kind: A1 - Application number: 13/536,980 - Filed: 2012-06-28 - Published: 2014-07-10 - Earliest claimed: 2012-06-28 - Assignees: Revision Military S.a.r.L. - Inventors: David Redpath; Marie-Pierre Gendron; Stéphane Lebel - Web page: https://patentgrep.com/patent/US20140189938A1 ## CPC - A42B 3/0406: {Accessories for helmets} - A42B 3/04: Parts, details or accessories of helmets - F41H 1/04: Protection helmets (crash helmets A42B3/00) - A42B: HATS; HEAD COVERINGS (headbands A41D20/00; head-scarves A41D23/00) - F41H: ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL ## Abstract Methods and devices for attaching a battery to a helmet and attaching a battery to an additional device are disclosed. A battery may be mounted to the rear center of a helmet. Attaching and detaching a battery to and from a helmet may be performed with a tool or by hand. The battery may be used to power multiple devices through separate contacts, and a device may be attached to the battery while the battery mounted to a helmet. The battery also may be detached from the helmet and serve as a portable energy source. ## Claims ### Claim 1 A helmet system comprising: a helmet; a battery pack having at least one battery; a first engaging member to attach the battery pack to the helmet; a first electrical contact to deliver power from the battery pack to a first device associated with the helmet when the battery pack is attached to the helmet; and a second electrical contact spaced from the first electrical contact, the second electrical contact configured to deliver power from the battery pack to a second device when the second device is electrically connected to the battery pack. ### Claim 2 (depends on 1) The helmet system of claim 1, further comprising a second engaging member to attach the battery pack to the second device. ### Claim 3 (depends on 1) The helmet system of claim 1, wherein the first engaging member removably attaches the battery pack to the helmet. ### Claim 4 (depends on 2) The helmet system of claim 2, wherein the second engaging member removably attaches the battery pack to the second device. ### Claim 5 (depends on 3) The helmet system of claim 3, wherein the second electrical contact is configured to deliver power from the battery pack to the second device when the battery pack is detached from the helmet. ### Claim 6 (depends on 1) The helmet system of claim 1, wherein attachment of the battery pack to the helmet via the first engaging member electrically connects the battery pack to the first device. ### Claim 7 (depends on 2) The helmet system of claim 2, wherein attachment of the battery pack to the second device via the second engaging member electrically connects the battery pack to the second device. ### Claim 8 A helmet system comprising: a helmet; a battery pack having at least one battery; a first engaging member to attach the battery pack to the helmet; a first electrical contact to deliver power from the battery pack to a first device associated with the helmet when the battery pack is physically attached to the helmet; a second engaging member to physically attach a second device to the battery pack; and a second electrical contact spaced from the first electrical contact and located on the battery pack, the second electrical contact being configured to deliver power from the battery pack to the second device when the second device is physically attached to the battery pack. ### Claim 9 (depends on 8) The helmet system of claim 8, wherein: the battery pack further comprises a first end portion; the second electrical contact is located on the first end portion; and the second engaging member attaches the second device to the first end portion. ### Claim 10 (depends on 9) The helmet system of claim 9, wherein the first end portion is at the top of the battery pack. ### Claim 11 (depends on 9) The helmet system of claim 9, wherein the first end portion is at the bottom of the battery pack. ### Claim 12 (depends on 8) The helmet system of claim 8, wherein the first engaging member removably attaches the battery pack to the helmet. ### Claim 13 (depends on 8) The helmet system of claim 8, wherein the second engaging member removably attaches the second device to the battery pack. ### Claim 14 (depends on 8) The helmet system of claim 8, wherein attachment of the battery pack to the helmet via the first engaging member electrically connects the battery pack to the first device. ### Claim 15 (depends on 8) The helmet system of claim 8, wherein the battery is curved along a vertical direction such that the battery conforms to the shape of the helmet. ### Claim 16 (depends on 8) The helmet system of claim 8, wherein attachment of the second device to the battery pack via the second engaging member electrically connects the battery pack to the second device. ### Claim 17 A helmet system comprising: a helmet; a battery pack having at least one battery; a first attachment arrangement to removably attach the battery pack to the helmet, the first attachment arrangement comprising a locking member and an engaging member to engage with the locking member; wherein the engaging member is configured to receive the locking member when the locking member is in a first configuration; when the locking member is engaged with the engaging member and in a second configuration, the locking member locks the battery pack to the helmet; and attachment of the battery pack to the helmet via the first attachment arrangement electrically connects the battery pack to an electrical contact associated with the helmet. ### Claim 18 (depends on 17) The helmet system of claim 17, further comprising a second attachment arrangement that cooperates with the first attachment arrangement to attach the battery pack to the helmet. ### Claim 19 (depends on 18) The helmet system of claim 18, wherein the first attachment arrangement restricts movement of the battery pack relative to the helmet in a first direction and the second attachment arrangement restricts movement of the battery pack relative to the helmet in a second direction, the second direction being different than the first direction. ### Claim 20 (depends on 17) The helmet system of claim 17, wherein the locking member is switchable between the first and second configurations by rotation of the locking member. ### Claim 21 (depends on 17) The helmet system of claim 17, wherein the locking member includes a hand-operable actuator to switch the locking member between the first and second configurations.